Wirastuti, Dessy, Sukmaningsih, A S S A, AND Sudirga, Sang Ketut. " Effect of Eucheuma cottoni seewead extract on malondialdehid level and spermatozoa of white rat (Rattus norvegicus L.) that induced by natrium nitrite" Jurnal Biologi Udayana [Online], Volume 26 Number 1 (9 June 2022)